I recently watched two King tv movies/miniseries I hadn't seen before: The Stand and The Tommyknockers. I read the stand a couple of times in the 1980s and read the unabridged version around four years ago, so the details of the book aren't cemented in my mind. But it still felt like a lot of characters were missing details and the miniseries wasn't as rich as the book. Not really surprising. What did surprise me is that I didn't hate the miniseries. I thought it was okay. Some of the portrayals didn't really work for me but some were pretty solid (Gary Sinise). A nitpick I have is King's appearance in the film. It really took me out of the moment and he kept popping up again.
I read Tommyknockers when it first came out (not even sure when that was but I'm pretty sure I haven't read any of King's work post-1990ish), so I only have this vague recollection of it being an okay read but weak in comparison to some of his other longer books. But either way the tv movie was atrocious.
Luckily I watched Tommyknockers first so The Stand looked even better in comparison.